I have a couple of medals, and a couple of numbered clasps from a good conduct award. The clasps are numbered 12491. I interpolated and figured the man’s first GCM must have been awarded around 1907-8. Both his clasps were dated May 27-1912, and May 27-1916. The medals are West Indies Campaign, USN and Phillipine Campaign, USN. I think it would have taken whoever was awarded a GCM in 1907 around 8 years to collect a GCM. I am not sure when they started with 4 or 3 year awards.
My question is, where could I possibly go or search to find who held Continuous Service Certificate #12491. If it turns out that guy served in the Spanish American War, I may have a 3 medal group on my hands.